SU1229255A1 - Apparatus for measuring the parameters of static probing - Google Patents

Description

The invention relates to devices for determining the physicomechanical characteristics of soils during geotechnical exploration and construction;

The aim of the invention is to ensure the reliability and accuracy of measurements.

Fig, shows the device, a general view; in fig. 2 - non-magnetic spool with reed switches, cut.

The device includes a basic mobile unit 1, on which a probe 2 is placed, a pushing mechanism 3, a measuring device in the form of a non-magnetic hollow body 4 in which the switch-on switches 5, the linear reference 6 and switch-off 7, and the magnet 8 in the non-magnetic mandrel 9 are successively placed. mounted on the movable part 10 of the crushing mechanism, the switching cable 11 and the recording apparatus - RU 12.

The device works as follows

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The force of the crushing mechanism 3 is transmitted to the probe 2, pressing it into the soil mass. At this time, the movable part 10 of the crushing mechanism is moved downward, pulling along a non-magnetic mandrel 9 with a magnet 8 along the body 4 with reed switches. as a result, pulses are formed that characterize the depth of the probe into the soil mass. In this case, the nonmagnetic mandrel 9 of the magnet 8 provides a fixed distance between the magnet and the reed switches, which increases the reliability of the measurements.

After the reed switch 7 is triggered, the electronic unit of the recording equipment 12 is automatically switched off, the movable part of the pushing mechanism 3 is returned to its original position, and also the column tgtang is expanded (if necessary).

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FIG. one

Compiled by N. Evstigneev Editor R. Tsitsika Tehred M. Khodanych Proofreader T.

Order 2421/23 Circulation 641 Subscription

VNIISH1 USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

FIG. 2

Claims (1)

DEVICE FOR MEASURING STATIC SENSING PARAMETERS, including a basic movable installation on which a probe is placed, a crushing mechanism, a measuring device in the form of a rail with electrical contacts placed on it and a contact brush that interacts with them and is attached to the movable element of the mechanism; pressures, and recording equipment, characterized in that, in order to increase the reliability and accuracy of measurements, the electrical contacts are made in the form of magnetically controlled reed switches, the rail is in the form of a hinged non-magnetic hollow housing in which the reed switches are placed in series, and the contact brush - in the form of a magnet in a non-g magnetic mandrel, which encloses the housing — with the possibility of longitudinal movement.